Well, there are some vendor locked dongles out there (I'm looking at you Panasonic!) that use regular off-the-shelf chips but cost a lot of money and not $5 that they're really worth. E.g. there's the AJ-WM50E dual band AC dongle (sold for 160 USD) that you should use with AG-UX180 camera to get wifi CCU running.
I happen to have one such dongle, couple of summer holiday nights and family far, far away. Why not do some hacking then?
The camera is - as far as I can tell - running Linux or a similar system. If so, it has a limited set of tools to get to know what's getting connected to it.
Make the not-so-Panasonic dongle resemble the Panasonic one as much as possible, so that the camera just enables it thinking it's legit.